1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2015 Freescale Semiconductor, Inc. All rights reserved.
5 * Authors: Zhao Qiang <qiang.zhao@nxp.com>
8 * QE TDM API Set - TDM specific routines implementations.
11 #include <linux/kernel.h>
12 #include <linux/of_address.h>
13 #include <linux/of_irq.h>
14 #include <linux/of_platform.h>
15 #include <soc/fsl/qe/qe_tdm.h>
17 static int set_tdm_framer(const char *tdm_framer_type)
19 if (strcmp(tdm_framer_type, "e1") == 0)
21 else if (strcmp(tdm_framer_type, "t1") == 0)
27 static void set_si_param(struct ucc_tdm *utdm, struct ucc_tdm_info *ut_info)
29 struct si_mode_info *si_info = &ut_info->si_info;
31 if (utdm->tdm_mode == TDM_INTERNAL_LOOPBACK) {
32 si_info->simr_crt = 1;
33 si_info->simr_rfsd = 0;
37 int ucc_of_parse_tdm(struct device_node *np, struct ucc_tdm *utdm,
38 struct ucc_tdm_info *ut_info)
44 sprop = of_get_property(np, "fsl,rx-sync-clock", NULL);
46 ut_info->uf_info.rx_sync = qe_clock_source(sprop);
47 if ((ut_info->uf_info.rx_sync < QE_CLK_NONE) ||
48 (ut_info->uf_info.rx_sync > QE_RSYNC_PIN)) {
49 pr_err("QE-TDM: Invalid rx-sync-clock property\n");
53 pr_err("QE-TDM: Invalid rx-sync-clock property\n");
57 sprop = of_get_property(np, "fsl,tx-sync-clock", NULL);
59 ut_info->uf_info.tx_sync = qe_clock_source(sprop);
60 if ((ut_info->uf_info.tx_sync < QE_CLK_NONE) ||
61 (ut_info->uf_info.tx_sync > QE_TSYNC_PIN)) {
62 pr_err("QE-TDM: Invalid tx-sync-clock property\n");
66 pr_err("QE-TDM: Invalid tx-sync-clock property\n");
70 ret = of_property_read_u32_index(np, "fsl,tx-timeslot-mask", 0, &val);
72 pr_err("QE-TDM: Invalid tx-timeslot-mask property\n");
75 utdm->tx_ts_mask = val;
77 ret = of_property_read_u32_index(np, "fsl,rx-timeslot-mask", 0, &val);
80 pr_err("QE-TDM: Invalid rx-timeslot-mask property\n");
83 utdm->rx_ts_mask = val;
85 ret = of_property_read_u32_index(np, "fsl,tdm-id", 0, &val);
88 pr_err("QE-TDM: No fsl,tdm-id property for this UCC\n");
92 ut_info->uf_info.tdm_num = utdm->tdm_port;
94 if (of_property_read_bool(np, "fsl,tdm-internal-loopback"))
95 utdm->tdm_mode = TDM_INTERNAL_LOOPBACK;
97 utdm->tdm_mode = TDM_NORMAL;
99 sprop = of_get_property(np, "fsl,tdm-framer-type", NULL);
102 pr_err("QE-TDM: No tdm-framer-type property for UCC\n");
105 ret = set_tdm_framer(sprop);
108 utdm->tdm_framer_type = ret;
110 ret = of_property_read_u32_index(np, "fsl,siram-entry-id", 0, &val);
113 pr_err("QE-TDM: No siram entry id for UCC\n");
116 utdm->siram_entry_id = val;
118 set_si_param(utdm, ut_info);
121 EXPORT_SYMBOL(ucc_of_parse_tdm);
123 void ucc_tdm_init(struct ucc_tdm *utdm, struct ucc_tdm_info *ut_info)
125 struct si1 __iomem *si_regs;
127 u16 siram_entry_valid;
128 u16 siram_entry_closed;
137 si_regs = utdm->si_regs;
139 ucc_num = ut_info->uf_info.ucc_num;
140 tdm_port = utdm->tdm_port;
141 siram_entry_id = utdm->siram_entry_id;
143 if (utdm->tdm_framer_type == TDM_FRAMER_T1)
144 utdm->num_of_ts = 24;
145 if (utdm->tdm_framer_type == TDM_FRAMER_E1)
146 utdm->num_of_ts = 32;
148 /* set siram table */
149 csel = (ucc_num < 4) ? ucc_num + 9 : ucc_num - 3;
151 siram_entry_valid = SIR_CSEL(csel) | SIR_BYTE | SIR_CNT(0);
152 siram_entry_closed = SIR_IDLE | SIR_BYTE | SIR_CNT(0);
154 for (i = 0; i < utdm->num_of_ts; i++) {
157 if (utdm->tx_ts_mask & mask)
158 iowrite16be(siram_entry_valid,
159 &siram[siram_entry_id * 32 + i]);
161 iowrite16be(siram_entry_closed,
162 &siram[siram_entry_id * 32 + i]);
164 if (utdm->rx_ts_mask & mask)
165 iowrite16be(siram_entry_valid,
166 &siram[siram_entry_id * 32 + 0x200 + i]);
168 iowrite16be(siram_entry_closed,
169 &siram[siram_entry_id * 32 + 0x200 + i]);
172 qe_setbits_be16(&siram[(siram_entry_id * 32) + (utdm->num_of_ts - 1)],
174 qe_setbits_be16(&siram[(siram_entry_id * 32) + 0x200 + (utdm->num_of_ts - 1)],
177 /* Set SIxMR register */
178 sixmr = SIMR_SAD(siram_entry_id);
180 sixmr &= ~SIMR_SDM_MASK;
182 if (utdm->tdm_mode == TDM_INTERNAL_LOOPBACK)
183 sixmr |= SIMR_SDM_INTERNAL_LOOPBACK;
185 sixmr |= SIMR_SDM_NORMAL;
187 sixmr |= SIMR_RFSD(ut_info->si_info.simr_rfsd) |
188 SIMR_TFSD(ut_info->si_info.simr_tfsd);
190 if (ut_info->si_info.simr_crt)
192 if (ut_info->si_info.simr_sl)
194 if (ut_info->si_info.simr_ce)
196 if (ut_info->si_info.simr_fe)
198 if (ut_info->si_info.simr_gm)
203 iowrite16be(sixmr, &si_regs->sixmr1[0]);
206 iowrite16be(sixmr, &si_regs->sixmr1[1]);
209 iowrite16be(sixmr, &si_regs->sixmr1[2]);
212 iowrite16be(sixmr, &si_regs->sixmr1[3]);
215 pr_err("QE-TDM: can not find tdm sixmr reg\n");
219 EXPORT_SYMBOL(ucc_tdm_init);